Top 9 Biorxiv Papers Today in Plant Biology


2.068 Mikeys
#1. X-ray phase contrast imaging of Vitis spp. buds shows freezing pattern and correlation between volume and cold hardiness
Alisson P Kovaleski, Jason P Londo, Kenneth D Finkelstein
Grapevine ( Vitis spp.) buds must survive winter temperatures in order to resume growth when suitable conditions return in spring. They do so by developing cold hardiness through deep supercooling, but the mechanistic process of supercooling in buds remains largely unknown. Here we use synchrotron X-ray phase contrast imaging to study cold hardiness-related characteristics of V. amurensis , V. riparia , and V. vinifera buds: time-resolved 2D imaging was used to visualize freezing; and microtomography was used to evaluate morphological changes during deacclimation. Bud cold hardiness was determined (low temperature exotherms; LTEs) using needle thermocouples during 2D imaging as buds were cooled with a N2 gas cryostream. Resolution in 2D imaging did not allow for ice crystal identification, but freezing was assessed due to movement of tissues coinciding with LTE values. Freezing was observed to propagate from the center of the bud toward the outer bud scales. The freezing events observed lasted several minutes. Additionally, loss...
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biorxivpreprint: X-ray phase contrast imaging of Vitis spp. buds shows freezing pattern and correlation between volume and cold hardiness https://t.co/oo0AasNKEi #bioRxiv
biorxiv_plants: X-ray phase contrast imaging of Vitis spp. buds shows freezing pattern and correlation between volume and cold hardiness https://t.co/4Ax2KOwpUO #biorxiv_plants
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Authors: 3
Total Words: 0
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2.06 Mikeys
#2. Brassinosteroid signaling controls PILS-dependent nuclear auxin input in Arabidopsis thaliana
Lin Sun, Elena Feraru, Mugurel I Feraru, Jurgen Kleine-Vehn
Auxin and brassinosteroids (BR) are crucial growth regulators and display overlapping functions during plant development. Here, we reveal an alternative phytohormone crosstalk mechanism, revealing that brassinosteroid signaling controls nuclear abundance of auxin. We performed a forward genetic screen for imperial pils (imp) mutants that enhance the overexpression phenotypes of PIN-LIKES (PILS) putative intracellular auxin transport facilitator. Here we report that the imp1 mutant is defective in the brassinosteroid-receptor BRI1. BR signaling transcriptionally and posttranslationally represses accumulation of PILS proteins at the endoplasmic reticulum, thereby increasing nuclear abundance and signaling of auxin. We demonstrate that this alternative phytohormonal crosstalk mechanism integrates BR signaling into auxin-dependent organ growth rates and likely has widespread importance for plant development.
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biorxivpreprint: Brassinosteroid signaling controls PILS-dependent nuclear auxin input in Arabidopsis thaliana https://t.co/aDn6Izlimi #bioRxiv
biorxiv_plants: Brassinosteroid signaling controls PILS-dependent nuclear auxin input in Arabidopsis thaliana https://t.co/A0ewLY7j5C #biorxiv_plants
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Authors: 4
Total Words: 7030
Unqiue Words: 2089

2.017 Mikeys
#3. PICKLE recruits RETINOBLASTOMA RELATED 1 to Control Lateral Root Formation in Arabidopsis
Krisztina Ötvös, Pál MIskolczi, Peter Marhavý, Alfredo Cruz-Ramírez, Eva Benková, Stéphanie Robert, László Bakó
Lateral root (LR) formation is an example of plant post-embryonic organogenesis event. LRs are issued from non-dividing cells entering consecutive steps of formative divisions, proliferation and elongation. The chromatin remodeling protein PICKLE negatively regulates auxin-mediated LR formation through a mechanism that is not yet known. Here we show that PICKLE interacts with RETINOBLASTOMA-RELATED 1 (RBR1) to repress the LATERAL ORGAN BOUNDARIES-DOMAIN 16 (LBD16) promoter activity. Since LBD16 function is required for the formative division of LR founder cells, repression mediated by the PKL-RBR1 complex negatively regulates formative division and LR formation. Inhibition of LR formation by PKL-RBR1 is counteracted by auxin indicating that in addition to auxin-mediated transcriptional responses, the fine-tuned process of LR formation is also controlled at the chromatin level in an auxin-signaling dependent manner.
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biorxivpreprint: PICKLE recruits RETINOBLASTOMA RELATED 1 to Control Lateral Root Formation in Arabidopsis https://t.co/gGzIwsD19q #bioRxiv
biorxiv_plants: PICKLE recruits RETINOBLASTOMA RELATED 1 to Control Lateral Root Formation in Arabidopsis https://t.co/GRn496yX4Y #biorxiv_plants
PromPreprint: PICKLE recruits RETINOBLASTOMA RELATED 1 to Control Lateral Root Formation in Arabidopsis https://t.co/igULEkHHy8
TTT_IIIs: RT @biorxiv_plants: PICKLE recruits RETINOBLASTOMA RELATED 1 to Control Lateral Root Formation in Arabidopsis https://t.co/GRn496yX4Y #bio…
tran_scription: RT @biorxiv_plants: PICKLE recruits RETINOBLASTOMA RELATED 1 to Control Lateral Root Formation in Arabidopsis https://t.co/GRn496yX4Y #bio…
sbotlite: RT @biorxivpreprint: PICKLE recruits RETINOBLASTOMA RELATED 1 to Control Lateral Root Formation in Arabidopsis https://t.co/gGzIwsD19q #bi…
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Authors: 7
Total Words: 10538
Unqiue Words: 3009

2.016 Mikeys
#4. GRANAR, a new computational tool to better understand the functional importance of root anatomy
Adrien Heymans, Valentin Couvreur, Therese LaRue, Ana Paez Garcia, Guillaume Lobet
Root hydraulic conductivity is an important determinant of plant water uptake capacity. In particular, the root radial conductivity is often thought to be a limiting factor along the water pathways between the soil and the leaf. The root radial conductivity is itself defined by cell scale hydraulic properties and anatomical features. However, quantifying the influence of anatomical features on the radial conductivity remains challenging due to complex, and time-consuming, experimental procedures. We present a new computation tool, the Generator of Root ANAtomy in R (GRANAR) that can be used to rapidly generate digital versions of root anatomical networks. GRANAR uses a limited set of root anatomical parameters, easily acquired with existing image analysis tools. The generated anatomical network can then be used in combination with hydraulic models to estimate the corresponding hydraulic properties. We used GRANAR to re-analyse large maize (Zea mays) anatomical datasets from the literature. Our model was successful at creating...
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biorxivpreprint: GRANAR, a new computational tool to better understand the functional importance of root anatomy https://t.co/GRE3CoR3C3 #bioRxiv
biorxiv_plants: GRANAR, a new computational tool to better understand the functional importance of root anatomy https://t.co/ZHgyI7JFRh #biorxiv_plants
PromPreprint: GRANAR, a new computational tool to better understand the functional importance of root anatomy https://t.co/A6HtW7jjZH
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GRANAR User guide

Repository: granar_examples
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Language: Python
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Total Words: 11070
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2.016 Mikeys
#5. The Synchytrium endobioticum AvrSen1 triggers a Hypersensitive Response in Sen1 potatoes while natural variants evade detection
Bart van de Vossenberg, Charlotte Prodhomme, Gert van Arkel, Marga van Gent, Marjan Bergervoet, Balazs Brankovics, Jaroslaw Przetakiewicz, Richard Visser, Theo van der Lee, Jack Vossen
Synchytrium endobioticum is an obligate biotrophic fungus of the phylum Chytridiomycota. It causes potato wart disease, has a world-wide quarantine status and is included on the HHS and USDA Select Agent list. S. endobioticum isolates are grouped in pathotypes based on their ability to evade host-resistance in a set of differential potato varieties. So far, thirty-nine pathotypes are reported. A single dominant gene (Sen1) governs pathotype 1 resistance and we anticipated that the underlying molecular model would involve a pathogen effector (AvrSen1) that is recognized by the host. The S. endobioticum specific secretome of fourteen isolates representing six different pathotypes was screened for effectors specifically present in pathotype 1(D1) isolates but absent in others. We identified a single AvrSen1 candidate. Expression of this candidate in potato Sen1 plants showed a specific hypersensitive response, which co-segregated with the Sen1 resistance in potato populations. No HR was obtained with truncated genes found in...
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biorxivpreprint: The Synchytrium endobioticum AvrSen1 triggers a Hypersensitive Response in Sen1 potatoes while natural variants evade detection https://t.co/JoyicgADEe #bioRxiv
biorxiv_plants: The Synchytrium endobioticum AvrSen1 triggers a Hypersensitive Response in Sen1 potatoes while natural variants evade detection https://t.co/CknhbJX7ZW #biorxiv_plants
JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first effector described in the fungal phylum of Chitridiomycota.
Team_Thomma: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
schwessinger: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
EvoMPMI: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
guidopmi: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
delaconcepcionj: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
francine_govers: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
xiaolin422: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
FredAsiegbu: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
hmromeroa: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
CProdhomme: RT @JackVossen: Our manuscript on the cloning of the Synchytrium endobioticum AvrSen1 gene is now online https://t.co/nc66RmqRvW The first…
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2.008 Mikeys
#6. Anaesthesia with diethyl ether impairs jasmonate signalling in the carnivorous plant Venus flytrap (Dionaea muscipula).
Andrej Pavlovic, Michaela Libiakova, Boris Bokor, Jana Jaksova, Ivan Petrik, Ondrej Novak, Frantisek Baluska
General anaesthetics are compounds that induce loss of responsiveness to environmental stimuli in animals and humans. The primary site of general anaesthetic action is the nervous system, where anaesthetics inhibit neuronal transmission. Although plants do not have neurons, they generate electrical signals in response to biotic and abiotic stresses. Here, we investigated the effect of the general volatile anaesthetic diethyl ether on the ability to sense potential prey or herbivore attacks in the carnivorous plant Venus flytrap (Dionaea muscipula). We monitored trap movement, electrical signalling, phytohormone accumulation and gene expression in response to the mechanical stimulation of trigger hairs and wounding under diethyl ether treatment. Diethyl ether completely inhibited the generation of action potentials and trap closing reactions, which were easily and rapidly restored when the anaesthetic was removed. Diethyl ether also inhibited the later response: jasmonate (JA) accumulation and expression of JA-responsive genes....
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biorxivpreprint: Anaesthesia with diethyl ether impairs jasmonate signalling in the carnivorous plant Venus flytrap (Dionaea muscipula). https://t.co/W8wYh4gST6 #bioRxiv
biorxiv_plants: Anaesthesia with diethyl ether impairs jasmonate signalling in the carnivorous plant Venus flytrap (Dionaea muscipula). https://t.co/MArEYwzT1b #biorxiv_plants
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Authors: 7
Total Words: 11790
Unqiue Words: 3856

1.998 Mikeys
#7. Quantification of bioagressors induced yield gap for grain crops in France
Nathan Devaud, Corentin Mario Barbu
Analyzing yield losses of crops is instrumental in sustaining high productivity. Here, we develop statistical modelling of yield losses by French department based on weather, soil and epidemiological data for 13 diseases and 12 insect pests of grain crops over 8 years. Those environmental factors explain up to 90% of yield variations (wheat). Weather and soil quality are first order determinants as manifested both by direct assessment and by strongly correlated yields of even taxonomically very different crops. Bioagressors are important second order determinants: losses of 5 qx/ha (~7%) on wheat and 2 qx/ha (~15%) on winter oilseed rape. Across models based on conceptually different achievable yields, only Septoria tritici and Sitobion avenae on wheat, and Ceutorhynchus picitarsis and Ceutorhynchus assimilis on winter oilseed rape are consistently and significantly detrimental to yield. Those bioagressors seem not fully controlled which is compatible with empirical observations in the non academical litterature.
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biorxivpreprint: Quantification of bioagressors induced yield gap for grain crops in France https://t.co/wKKgRoW7rs #bioRxiv
biorxiv_plants: Quantification of bioagressors induced yield gap for grain crops in France https://t.co/rXwA1W35pP #biorxiv_plants
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Authors: 2
Total Words: 5708
Unqiue Words: 1684

1.994 Mikeys
#8. A carbohydrate-binding protein, FLOURY ENDOSPERM 6 influences the initiation of A- and B-type starch granules in wheat.
Tansy Chia, Marcella Chirico, Robert King, Ricardo Ramirez-Gonzalez, Benedetta Saccomanno, David Seung, James Simmonds, Marti Trick, Cristobal Uauy, Tamara Verhoeven, Kay Trafford
Previously, we identified a quantitative trait locus on the group 4 chromosomes of Aegilops and bread wheat that controls B-type starch-granule content. Here, we identify a candidate gene by fine-mapping in Aegilops and confirm its function using wheat TILLING mutants. This gene is orthologous to the FLOURY ENDOSPERM 6 (FLO6) gene of rice and barley and the PTST2 gene of Arabidopsis. In Triticeae endosperm, reduction in the gene dose of functional FLO6 alleles results in reduction, or loss, of B-granules. This is due to repression of granule initiation in late-grain development, but has no deleterious impact on the synthesis of A-granules. The complete absence of functional FLO6, however, results in reduced numbers of normal A-type and B-type granules and the production of highly-abnormal granules that vary in size and shape. This polymorphous starch seen in a wheat flo6 triple mutant is similar to that observed in the barley mutant Franubet. Analysis of Franubet (fractured Nubet) starch suggests that the mutant A-granules are not...
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Authors: 11
Total Words: 9542
Unqiue Words: 2345

1.962 Mikeys
#9. Tomato root transformation followed by inoculation with Ralstonia solanacearum for straightforward genetic analysis of bacterial wilt disease
Rafael Morcillo, Achen Zhao, Maria I Tamayo-Navarrete, Jose M Garcia-Garrido, Alberto Macho
Ralstonia solanacearum is a devastating soil borne vascular pathogen that is able to infect a large range of plant species, causing an important threat to agriculture. However, the Ralstonia model is considerably under-explored in comparison to other models involving bacterial plant pathogens, such as Pseudomonas syringae in Arabidopsis. Research targeted to understanding the interaction between Ralstonia and crop plants is essential to develop sustainable solutions to fight against bacterial wilt disease, but is currently hindered by the lack of straightforward experimental assays to characterize the different components of the interaction in native host plants. In this scenario, we have developed an easy method to perform genetic analysis of Ralstonia infection of tomato, a natural host of Ralstonia. This method is based on Agrobacterium rhizogenes-mediated transformation of tomato roots, followed by Ralstonia soil-drenching inoculation of the resulting plants, containing transformed roots expressing the construct of interest....
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